Operating lever for working vehicle



FIG. 1 is a top plan view of an operating lever for working vehicle showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a rear view thereof. 

The ornamental design for an operating lever for working vehicle, as shown and described. 